Well, they bottle wine in screw caps, so as long as you are sure there is no more yeast growing, and all is quiet, you could probably do it. Go over to winepress and ask this question. The experts are there.

Corks expand to fit the neck of the bottle, providing a tight seal. There were no comparable materials when that was discovered, so they've become the closure of choice. A good cork, in wine that is properly stored, can last many many years.

Crown caps are less secure. My guess, and it's only a guess, is that if as mentioned above, the wine is finished, you can probably use a crown cap for a short time.

I don't know the stats for air transpiration with screw caps either. How long can you store something sealed with crown caps?

Corks are not ideal closures IMO. Personally, I love the idea of screw tops because corks have plenty of problems. But they do have a track record, so assuming you have good corks, you've at least got history on your side.

Similar question. Can you use the beer capper to put beer caps onto 750 ml wine bottles? My husband is making mead now and I was wondering if we wanted to put some of it into wine bottles if we could cap it like he does with regular beer bottles.

Crown caps will do fine. I have made sparkling wine in the "methode champenoise" process in which the wine undergoes secondary fermentation in the bottle - champagne bottles. The bottles are "riddled": stored neck down and turned every so often to concentrate the lees at the neck. The final cork closure is put in later.

Bottles that can accommodate crown caps can usually handle a bit of pressure. But there is a mighty fine line between a sparkling wine and hand grenades.